Hoisting mechanism.



No. 818,212. PATENTED APR. 17, 1906. D. ABBEY.

HOISTING MECHANISM.

APPLICATION FILED AUG. 10, 1905.

QSHEETS-SHEET 1.

PATBNTED APR. 17, 1906.

3 SHEETS'SHBET 2.

D. ABRBY.

HOISTING MECHANISM. APPLIICIATION IILE-D AUG 10 1905 D. ABBEY. HOISTING MECHANISM.

APPLIOATION FILED AUG. 1:0. 1905.

No. 818,212. PATENTED APR. 17, 1906.

3 SHEETSSHE"ET 3.

Mk9 I b) UNITED STATES PATENT oriuon.

H'OISTING MECHANlSM.

T (LU-1071,0770 it may concern.-

Be it known that I, DANIEL ABBEY, a citi zen of the United States, residing at Philadelphia, in the county of Philadelphia, in the State of Pennsylvania, have invented a new and useful Improvement in Hoisting Mechenism, of which the following is a specificaion.

Figure-1 is an elevation of mechanism embodying my improvements, part of the frame being broken away. Fig. 2 is a similar view showing my improvements embodied in another form. Fig. 3.is a similar view showing still another form of apparatus in which my invention may be embodied. Fig. 4 is an end view of the, device shown in- Fig. 1. Fig. 5 is an end view of the device shown in Fig. 2,

and Fig. 6 is an end-view of the device shown in Fig. 3.

My improvementin hoistingunaehines is more particularly intended for passenger and freight elevators, but equally applicable for other kinds of hoisting.

The improvement relates to a better meth--- 0d of propelling hoisting-machines .by a new way of using orm-gearing and. isdescribed' as follows:

Figs. 1, 2, and 3 are front elevationsof three hoisting-machines and each machine driven by two worm gear-wheels, (marked on the illustrations C and C 5110..)

two parallel shafts F and F by right and left hand worms firmly mounted on each shaft and the worms meshing into the worm-wheels -C and C &c., on'opposite sides. The paropposite directions, thereby operating the parallel shafts in: such directions, respec' tively.

- Fig." 1 .has the two worm-wheels O and C firmly vmounted on t e-shafts of the two drums B and B an Whenever the wormwheels revolve the hoisting-drums are workmg.

Fig. 2 has one worm-wheel C firmly mounted. on the shaft of the drum B and the other worm -wheel-G firmly mounted on the trans-' verseshaft, on which is also firmly mounted Specification of Letters Patent.

Application filed August 10, 1905, Serial No. 273,697..

drum pulls and Winds on the rope or unwinds Said I vworm-wheels of each machine are driven by Patented Aprildl'fa1, 6

the spur gear-wheel M, which meshes into the similar spur gear-wheel M firmly mounted on the shaft of the other drum B. I *There .fore when the worm -,wheels C and Q are driven. the machine is working.

Fig. 3 has one worm-wheel C firmly mounted on the shaft of the drum Band the other worm-wheel C firmly mounted on a transverse shaft, on which is also firmly mounted the spur gear-wheel M, which meshes into the similar spur gear-wheel M, firmly mounted on the shaft of the drum B. Therefore when the worm-wheels G and C are driven the machine is working.

The hoisting-machine (marked Fig. 1) has two winding or hoisting drums B and B for pulling or slackening the rope or chain D, and one end of it is fastened to the drum P, and the other end of it is fastened to the drum When the machine is in motion, eacn and slackens it.

The hoisting-machine (marked Fig-2) has two drums, each revolving in the same direction, but alternately forward and backward. The rope or chain is wound several times aro rnd the hoisting-drums-B and B to give the drums suflicient hold of the rope to prevent slipping, and when one end of the rope is hoisting a load the other end. of the 4 rope will be unwinding from the drums; but, alternately, either end of the rope can be used alike to lift a load.

The hoisting-machine (illustrated in Fig. 3) has only one winding or hoisting drum B One end of the rope or chain D is fastened to the drum, and the other end is fastened to the load to be moved.

The belt-pulleys (shownin Figs. 1, 2, and 3 in the drawings mounted on the drivingshaft L and marked H, H and H is a common contrivance of two loose ulleys and the center pulley fast to the driving-shaft, by which cross and straight belts are used to drive the hoisting-drums forward. and back what I claim as new, and desire to secure by Letters Patent of the United States, is-

1. In a hoisting-machine gearing comprising a plurality of worms in pairs, transverse shafts, worm wheels thereon the opposite sides of which engage said Worms of the respective pairs and drums, each actuated from one of said worm-wheels.

2. In a hoisting-machine gearing comprising a plurality of worms in pairs, transverse shafts, drums carried thereby, and wormwheels mounted on said shafts and meshing at opgosite sides with the worms of a pair.

3. n a hoisting-machine, a power-shaft, a gear carried thereby, parallel shafts, a gear on each shaft in mesh with each other and one of said gears in mesh with the gear of the powershaft, a right and left hand worm mounted on each of said parallel shafts, transverse shafts journaled between and at right angles to the 20 worm-shafts and actuated thereby, and a drum mounted on each of said transverse shafts.

4. In a hoisting-machine, parallel shafts, a right and left hand worm mounted on each of said parallel shafts, transverse shafts journaled between and at right angles to the worm-shafts and actuated thereby, a drum mounted on one of said transverse shafts and means for imparting motion to said parallel o shafts.

In testimony whereof I have signed-my name to this specification in the presence of two subscribing witnesses.

DANIEL ABBEY.

lVitnesses:

HUGH MCDONALD, E. H. CLAPP. 

